Oral Histology MCQs

Page No. 18

A supernumerary tooth results from a deviation during_____________?


aInitiation


b Differentiation


cApposition


d Calcification


View Answer Initiation

Accessory canals result from____________?


aDefects in cementogenesis


bDividing epithelial bridges


cBreak in Hertwig’s root sheath


dAdherent epithelial rests



Following is derivative of dental lamina____________?


aEpithelial rests of Malassez


bEnamel pearls


cRests of serrae


dAll of the above


View Answer Rests of serrae

Hertwig’s epithelial root sheath is made up of_______________?


aOuter and inner enamel epithelium


bStratum intermedium


cStellate reticulum


dHyaline layer of Hopewell-smill



In considering the process of eruption, the pre-functional eruptive stage of a tooth begins when the_____________?


aBud stage begins


bCap stage begins


cBell stage begins


d Dental lamina begins forming



Ectodermal cells in tooth bud are responsible for_______________?


aDetermination of shape of crown and root


b Formation of periodontal ligament


cFormation of cementum


dFormation of pulp



Dental lamina is active up to_______________?


a1 year


b 2 years


c3 years


d4 years


View Answer 4 years

Dentinal tubules are______________?


aConcave


bStraight


cS0shaped


dNone of the above


View Answer S0shaped

Dead tracts in ground section appears as_____________?


aDentinal tubules


bCoarse fibril bundles arranged at right angle to the dentinal surface


cBlack in transmitted light and white in reflected light


d White in transmitted light and dark in reflected light



Which of the following dentinal layers is more mineralized______________?


aPeritubular dentin


b Inter tubular dentin


cDentinal tubules


dCircum pulpal dentin


View Answer Peritubular dentin

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